Imagine an average ml works 3 days a week across 1 or 2 venues, seeing 5 clients a day. Conservatively speaking. So 15 different guys a week, mostly trying the same thing. "Where are you from? Are you studying here? You're very pretty.". They know that repeat clientèle is bread and butter so smile, giggle etc and make their client feel great. Clients feel this makes them special and ask for numbers etc. It seems a lot of workers have 2 mobiles, work and life. Anyhow you can follow that story to its natural conclusion. Occasionally, rarely, there is a genuine connection. You don't have to guess it you will know. Then the question for the two people involved is how far down the rabbit hole they are willing to go. Dating a ml is not for everyone, you have to be extremely comfortable within yourself, and same goes for the girl too. Of course if it's just a casual thing with no emotions involved be clear from the start.